<template>
  <div class="todo-container">
    <div class="todo-wrap">
      <Header @addTodo="addTodo"></Header>
      <List :todos="todos"></List>
      <Footer></Footer>
    </div>
  </div>
</template>

<script>
import Header from './components/Header.vue'
import List from './components/List.vue'
import Footer from './components/Footer.vue'
export default {
  components: {
    Header,
    List,
    Footer,
  },
  data() {
    return {
      todos: JSON.parse(localStorage.getItem('todos')) || [],
      editId: undefined,
    }
  },
  methods: {
    addTodo(e) {
      const todoName = e.target.value.trim()
      if (!todoName) return
      const todo = {
        id: Date.now(),
        isDone: false,
        todoName,
      }
      this.todos.push(todo)
      e.target.value = ''
    },
    updateTodo(id) {
      // console.log(id)
      this.todos.forEach((item) => {
        if (item.id === id) item.isDone = !item.isDone
      })
    },
  },
  mounted() {
    //组件挂载的时候,给$bus绑定事件.接收要修改的任务名的id
    this.$bus.$on('updateTodo', this.updateTodo)
  },
  beforeDestroy() {
    this.$bus.$off('updateTodo')
  },
}
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}
.btn-edit {
  color: #fff;
  background-color: skyblue;
  border: 1px solid skyblue;
  margin-right: 10px;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>
